US2700919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decorative materials and devices having polarizing and birefringent layers
Assignee: Individual
•
Filing: 1951-04-26
•
Granted: 1955-02-01
•
Expires: 1971-04-26
Abstract
No abstract record available.
Inventors
- 👤 Boone Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:36
CPC Classifications
B; B44; B44F; B44F1/00; B44F1/02; B44F1/04; B44F1/045; G; G02; G02B; G02B5/00; G02B5/04; G02B5/045; G02B5/20; G02B5/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1882829A
Cited
US2017705A
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US2018214A
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GB457443A
Cited
US2169022A
Cited
US2180114A
Cited
DE683933C
Cited
US2158129A
Cited
US2362573A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |